Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add skills-il/tax-and-finance --skill dual-listed-arbitragegit clone --depth 1 https://github.com/skills-il/tax-and-financeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/skills-il/tax-and-finance/dual-listed-arbitrage)<a href="https://agentmods.dev/skills/skills-il/tax-and-finance/dual-listed-arbitrage"><img src="https://agentmods.dev/badge/skills/skills-il/tax-and-finance/dual-listed-arbitrage/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/skills-il/tax-and-finance/dual-listed-arbitrage"><img src="https://agentmods.dev/badge/skills/skills-il/tax-and-finance/dual-listed-arbitrage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00129 | $0.02935 |
| Opus 5.5 | $0.00052 | $0.01174 |
| Sonnet 5.5 | $0.00026 | $0.00587 |
| Haiku 4.5 | $0.00013 | $0.00294 |
Grade A, and why
dual-listed-arbitrage scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Dual-Listed Price Gap Tracker
Legal notice
This is a free information tool operated by an AI model. It gathers data that has been published to the public and presents it in an organised form. The operators of this tool hold no personal interest in the securities or financial assets it mentions, and receive no consideration, commission, or benefit of any kind for presenting them. All of its outputs are produced automatically by an AI model, with no involvement, review, or approval by a licensed investment adviser.
The output is not investment advice, not investment marketing, and not a recommendation to buy, sell, or hold any security or financial asset. It is not a substitute for advice that takes account of the particular circumstances and needs of each person, and it does not consider your financial position, your investment objectives, or the risk you are able to bear. Market data may be partial, delayed, or wrong, and an AI model may err, omit data, or present a wrong conclusion. Consult a licensed adviser before any investment decision and verify every figure against the official source. All use of its output is the user's sole responsibility.
Compare the Tel Aviv and US prints of the same dual-listed company and report the currency-adjusted premium/discount. Treat the headline number as a monitor, not a free-money signal: for these fungible shares most of the gap is quote-timing, FX timing, and bid/ask, and closing a real gap means transferring shares between the registers (days of settlement plus cost).
Instructions
Step 1 - Load the pair registry
references/dual-listed-pairs.md (mirrored in scripts/registry.py) lists 29 TASE/US pairs with their US ticker, conversion ratio and per-pair alert threshold, drawn from the TASE "Dual Listed" securities list (52 records on 15 Sep 2026). Never hardcode a pair from memory, and never assume the US ticker equals the TASE symbol: the Tel-Aviv line CYBR is Palo Alto Networks, whose US ticker is PANW. A famous Israeli name is not necessarily dual-listed: Check Point trades on Nasdaq only, so there is no Tel-Aviv leg to compare. If a requested company is not in the registry, say so instead of estimating.
What ships with it
17 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- CHANGELOG.md 2.6 KB
- evals/dual-listed-arbitrage.eval.yaml 1.7 KB
- evidence.json 13 KB
- examples/01-single-pair-premium.md 1.7 KB
- examples/02-multi-pair-scan-chart.md 1.6 KB
- examples/gap-scan-he.md 1.8 KB
- metadata.json 2.1 KB
- optimization-log.json 3.7 KB
- references/boi-fx.md 1.0 KB
- references/domain-checklist.md 4.6 KB
- references/dual-listed-pairs.md 4.0 KB
- scripts/chart.py 6.9 KB runs code
- scripts/dual_diff.py 1.6 KB runs code
- scripts/provider.py 5.3 KB runs code
- scripts/registry.py 3.0 KB runs code
- scripts/viz.py 14 KB runs code
- SKILL_HE.md 15 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed · +26 lines · +5 tokens per session f128b79befbe
- 1mo ago First seen · 136 lines · 124 tokens per session scan A dc64b521b476
dual-listed-arbitrage is a skill published in the GitHub repository skills-il/tax-and-finance (38 stars, last pushed yesterday), licensed MIT. It adds 129 tokens to every session and 2,935 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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